IQmath Library
IQmath Library
IQmath Library
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5.2.4. IQNmpyI32: Multiplication (IQN*LONG) …………….. .........................................26<br />
5.2.5. IQNmpyI32int: Integer portion of IQN*LONG ……………....................................27<br />
5.2.6. IQNmpyI32frac: Fractional portion of IQN*LONG……………..............................28<br />
5.2.7. IQNmpyIQX: Multiplication (IQN=IQN1*IQN2)……………...................................29<br />
5.2.8. IQNdiv: Fractional portion of IQ*LONG…………….. ..........................................30<br />
5.3. Trignomatric Functions. …………….. ......................................................................34<br />
5.3.1. IQNsin: SIN(radians) …… ................................................................................34<br />
5.3.2. IQNsinPU: SIN(per unit) …… ...........................................................................37<br />
5.3.3. IQNcos: COS(radians) …… .............................................................................40<br />
5.3.4. IQNcosPU: COS(per unit) ..… ..........................................................................43<br />
5.3.6. IQNatan2: 4-quadrant ATAN (radians) …….......................................................46<br />
5.3.7. IQNatan2: 4-quadrant ATAN (per unit) …… ......................................................49<br />
5.3.8. IQNatan: ATAN(radians) …… ..........................................................................52<br />
5.4. Mathamatical Functions. …………….. .....................................................................54<br />
5.3.6. IQNsqrt: Square-root …… ................................................................................54<br />
5.3.7. IQNisqrt: Inverse Square root …… ...................................................................57<br />
5.4.3. IQNmag: Magnitude Square …… .....................................................................61<br />
5.5. Miscellaneous. …………….. ....................................................................................63<br />
5.3.6. IQsat: Saturate IQ number …… ........................................................................63<br />
5.3.7. IQNabs: Absolute value of IQN number …….....................................................64<br />
Appendix A: <strong>IQmath</strong> C-Calling convention ……………..................................................65<br />
©Texas Instruments Inc., June 2002 Version 1.4.1